brown



July 3, 1923.

F. H. BROWN APPARATUS FOR HEOULAEING COMBUSTION 1920 4 Sheets-$heet l Filed March July 3, 1923.

1.460366 F. H. BROWN APPARATUS FOR REGULATING' COMBUSTION Filed March 1920 4 Sheets-Sheet 2 fave-110 02:

July 3, 1923.

1,460,366 F. H. BROWN APPARATUS FOR RBGULATING COMBUSTION Filed. March 1920 4 Sheets-Sheet 3 July 3, 1923.

F. H. BROWN APPARATUS FOR REGULATING COMBUSTION Filed March 1920 4 Sheets-Sheet 4 Patented July 3, 1923.

UNITED STTES PATENT QFFICE.

FRANCIS H. BROWN, 02" GLEN GLDEN. PENNSYLVANIA. ASSIGNOB TD PETROLEUM HEAT AND POWER COMPANY OF FOS'IGN, MASSACHUSETTS, A CORPORATION OF DELAWARE.

APPARATUS FOR REGITLATING CQHBUSTION.

Application filed March 8, 1920 Serial Ho. 384,048.

Be it known 1111'. l. FRANCIS H. ilnovvrc, a citizen of the l ited States. residing at" (ilcn ()ldcn. in county of Dehiware and State of lenns i 1min. have invented nu Improvement in .'\ppnrntus for Regulating Combustion. of which the following description, in connectimi with the accompanying drawings. is a specitiratii'm. like characters on the drawings representing like parts.

The invention to he hereinafter dcscriheii relates to apparatus for regulating combuslion, and more particularly to the corn-hustion of liquid fuel such as crude oil.

in ord r to l urn fuel oil in furnace (#[NI'ib tions. it is necessary to utomizc the oil either in the oil burner or on dclivcr r therefrom. To accomplish this (hr oil may hiplaced in mechanical motion. or ompressed air or steam or other fluid under pressure may he used in the present insjzince oi" the invention. steam generated in the boilers einploviug the oil burners is utilized to iiiOllliZt the oil.

.lt is desirable that the oil and the str-uni employed for its atomization shall he prop erly proportioned in volume and pressure, and that the volume and pressure thereof shall be simultaneously and :iutmnntirnlly varied for the rate of conil'iustiou to o min efiicient operation.

One of the purposes oi the present invention. therefore, is to provide simple and cilicient means for nutonuitically regulating the supply of oil and ntouiizing steam to the burner. In carrying this feature of the invention into practical effect, simple uni ellicient valves are provided which lllll he reuulated to meet charming ci'mditious with a desirable nicet v of adjustment. These valves may he illthlllllliitklll) operated in response to variations in static and viuetic steam pressure. or either t them. so :is to autonmtirallv maintain piopcr pres ure illili. volume of the oil and steam. or oiiier ulrmiZ' ing agent and the alves. llll. mnuuzil adjustment to :liil'ereul I ng positions, so that thcv will :illmv maximum. or minimum amount of oil and steam to he delivered to the liuruer. for n'iaiimum or minimum loud. or the may h :nliustcn so as to allow the rrcrl o." uii and steam required nt w' and minimum amounts to P.-

burner, corresponding to the load, and this adjustment may be accomplished while the burner is in operation.

it desirable to establish a standard working pressure of the steam developed by a generiiton and to maintain this Working pressure suhstnntially constant under variations in the load or demand on the generator Another purpose of the invention, therefore. is to provide means for automaticiiiiv regulating the oil and steam control valves which will be responsive to variations in the load or demand on the generator, and automatically regulate the valves so as to deliver and atomize'oil in proper amount at all rates of work to maintain the standard of working pressure of the steam.

To maintain the working pressure of the sh in substantially constant, it is not only desirable automatically to regulate the supply of oil and atomizing steam to the burner, but also to regulate other conditions attendiii; the combustion of the oil, such, for example. as the draft to the furnace heated by the burner or the air necessary for efficient comlmstion of the oil, and the escape of the products of combustion from the furnace.

Another purpose of the invention, therelore, is to provide regulating apparatus which may be operated automatically in re sponse to variations in static and kinetic pressure or the steam, or either of them for controlling the air admitted to the furnace, and the escape of the products of combustion from the furnace.

With the aforesaid and other objects in vie-w. the character of the invention will be best understood by reference to the following description of one'good form of the invention shown in the accompanying drawings. wherein:

Fig. I is a front elevation of a battery or rissenihlagze of boilers equipped to burn crude oil and provided with automatic regulating apigumtiis embodying the invention;

in. 2 is a vertical section taken on line fl--12 tliimigli one of the units of the hat ter or Fig. i;

Fig. I) on an enlarged scale is a perspective view of :i motor device constituting a part of the mandating apparatus;

is a ticul se tion through a por- W n i the de i e shown in Fig. 3:

assemblage of boilers shown in- Fig. on an enlarged scale is a vertical section taken on line 5 5 of Fig. 6; and

Fig. 6 on an enlarged scale is a front elevation of the motor device and the valves controlled thereby for regulating the suply of oil and steam to the burner or urners.

Referring to the drawings, the regulating apparatus embodying the invention may be applied to any suitable form of steam generator, in the present instance, for convenience of illustration shown as a boiler of't'he Stirling type. In the present in stance, a battery of these boilers consisting of two units is shown, but one or more units may be employed as desired. Since these units are similar, a description of one will suflice for both.

' Referring to Figs. 1 and 2, this Stirling I iler comprises three upper drums 1, 3 and and a lower or mud drum 7. The upper drums may be connected to the lower or mud .drum by banks of water tubes 9, 11 and 13. The steam spaces of the up er drums may be connected by pipes 15. he drums may be supported by suitable metal frame-workuwhich may be enclosed by the usual brick housing. The front of the boiler may be covered by suitable metal plates. in the present instance, the front of the boiler is provided with a Dutch oven 17 having a brick arch 19' projecting rearward therefrom. At the bottom of the combustion chamber of the oven is a grate 21 supporting brick checker-work 23 having air spaces communicating with the ash pit 25. The supply of air to the ash it may be regulated by a damper 27 under tie control of means to be described. At the rear of the boiler is the uptake 29 which may be provided with a dam er 31 for regulating the escape of the pro nets of combustion under the control of means to be described. The steam may be taken from the upper inter mediate drum 3 by a branch pipe 33 connected to a horizontal steam supply main 35. An suitable number of burners may be provided according to the size of the boilers. In the present instance, each of the boilers is provided with a pair of burnera 37 which may be entered through the front walls of the boilers at appropriate distances above the grate of the combus tion chambers thereof. The oil for the burners may be pumped from the usual storage tank through a pipe 39 (Fig. 1) leading to ad oil regulating valve 41 to be described. A pipe 43 leads from this valve to a main oil supply pipe 45 which may be connected by branch pipes 47 with the burners 37. Hand operated valves 49 may be provided in the branch pipes 47 to enable the oil to be shut oil or turned on as desired. The pipes 39 and 43 may be connected by a by-p ass pipe 50 whereby the oil may be shunted around the oil regulating valve 41if desired. The by-pass pipe may be provided with a valve 50. and the pipes 39 and 43 may be provided with valves 39 and 43 respectively. These pipes may be conveniently mounted on the front of the boilers.

To conduct steam to the burners, a pipe 51 may be provided leading from the steam supply main 35 to a steam regulating valve 53 to be described. This valve may be connected by a pipe 55 with a horizontal pipe 57 connected by branch pipes 59 with the burners. Hand valves 61 may be provided in the branch pipes to enable the same to be shut oil or turned on as desired. The steam pipe 51 may be connected to the pipe 55 by a by-pass pipe 63 in order to shunt the steam around the steam regulating valve 53 if desired. A valve 65 may be provided in the by-pass pipe 63, and valves 51 and 55 'may be provided in the pipes 51 and 55 respectively. The steam supply pipes described may be conveniently mounted on the front of the boilers.

As stated. one of the purposes of the invention is to provide simple and efficient valves for regulating the supply of oil and steam to the burner or burners with a desirable nicety of control.

The oil regulating valve 41, in the present instance of the invention. comprises a casing or cylinder 67 (Fig. 6) having heads 69 and 71 at opposite ends thereof. said cylinder being secured by bolts 73 to a suitable support, in the present instance, in the form of a plate 75 which may be mounted at the front of the boilers and conveniently centrally with respect to the two units. The cylinder 67 may have a pair of diametrically opposed ports 77 conveniently of rectangular form, and communicatin with an annular passage 79 (Figs. 5 and 6 encircling the cylinder 67, said passage in turn communicating with the pipe 43 referred to, leading to the burners. Mounted in the cylinder 67 is a valve 81 conveniently in the form of a hollow piston having an open end 83 and a closed end 85. h piston may be provided with a pair of diametrically opposed ports 89 convenienti of triangular form, and adapted to overlap more or less the rectangular ports 77 in the cylinder 67. The construction is such that the oil may flow through the pipe 39 into the cylinder 67, thence through the open end of the piston, and the triangular ports 89, through the rectangular ports 77 into the annular passage 79 and thence into the pipe 43 leading to the burners. When the a'pexes of the triangular piston ports 89 slightly overlap the cylinder ports 77 as shown in Fig. 6, merely a small amount of oil will pass therethrough and be delivered to the burners. is the piston valve is moved to ward thi right of said figure, the piston Inn Ill)

ports 89 will overlap the cylinder ports and furnish a progressively increasing opening to allow a progressively increasing quan; tity of oil to pass therethrough and be delivered to the burners. \Vhen the piston is moved to the right of Fig. 6 snlliriently to bring the bases of the piston ports in registration with the left cdggcs ol the cylinder ports, the maximum openings will be olr tained and the maximum amount of oil will he delivered to the burners.

Suitable means may be provided automatically to move the piston valu in its cylinder and enable variation in the extent of the reciprocatory movements of the piston valve as required. This means. in the present instance, comprises a stem 01 connected to the closed end o the piston valve. and projecting: through the head of the cylinder 67. This stem may be pivotally connected to a slide block J?- mounted in a guideway 95 formed in a projection 97 on the supporting plate 75.

Pivotally connected to the slide blot-l4 955 is a sleeve Hi! recei ing a rod 101 having its upper end pivotally connected to a nut 103 on a screw 1 5 rotatable in a bracket 10?, but confined against axial movement therein. At the outer end of the screw 105 is a handle 10? for adjusting the screw. A hand nut 109 is thieaded on the screw and adapted to engage the outer end of the bracket 107 to lock the screw 105 in tlllff ent )ositions of adjustment.

T w lower end of the rod 101 is pivotally connected to a not 111 threaded on a screw 113 rotatably mounted on a bracket 115, but confined against axial movement thereon. At the. outer end of said screw is a handle 11? for adjustin the same. A hand out 119 may be threade on said screw and engage the outer end of the bracket to lo k the screw in different positions of :u'ljnstnient.

The screw carrying brackets 10? and 115 may be mounted on a frame 121 comprising side bars 123 connected at their ends by cross bars 125 provided with eyes 127 and 129 for a purpose to be described. Said cross bars may be connected to a piston rod 131 connected to a piston 13.; (fig. l) mounted in a cylinder 135.

The iston 133 may be reciprocatcd in said cylinder by means of compressed air r other appropriate flu d. To control the ti tmission thereof to said cylinder. a pilot valve 137 may he provided. of usual runstruction, mounted in a valve. cylinder 13$ mounted on the cylinder 135 and commnnb eating with opposite ends thereof through ports 141 and 143.

The Screw 1"?) and 113 may be adjusted 80 that the rod l l will b;- cbiiq with mspect to tlw axia line of the piston rod 131. l'hrrrfwrr. when the frame 1'21 and the r; d 101 cart-i :1 thereby are recipmrateih the rod 101 will slide in the sleeve 99, and the latter will impart movement to the slide block 93, and the stem 91 in turn will move the piston valve 81 to adjust the triangular piston ports with respect to the rectangular ports of the casing 67. The extent of movement thus imparted to the piston valve will depend upon the obliquity of the rod 101. If the rod is adjusted to have a slight angle with respect to the axis of the piston rod 131. the iston valve will have a slight movement. n the other hand, if the rod 101 has a greater angle with respect to the axis of the piston rod 131, the piston rod will receive a greater movement in the course of the reciprocation of the piston 133. When the piston 133 moves upward, the piston valve will be moved to the right or the left, depending on whether the frame carried rod 101 is inclined upward toward the left or the right. As shown said rod is inclined upward toward the left, and therefore, when the piston 133 moves upward, the piston valve will be moved toward the right.

The piston valve ports 89 and the casing ports 77 are concealed from view, and therefore, it is desirable to provide means which may be readily visualized to indicate the adjustments or movements of the piston valve. To accomplish this, in the present instance. an index 145 (Fig. 6) may be atta hed to the slide block 93, and conveniently have the same shape as one of the triangular ports 89 of the piston valve. (o-operating with this index is a frame 147 on the supporting plate having an opening conveniently having the same rectangular shape as one of the ports in the cylinder 67. The construction is such that the triangular index 145 will overlap the rectangular openin; in said frame to the same extent that the triangular ports 89 of the piston valve overlap the rectangular ports 77 in the cylinder, and thus this indicating means will enable ready angular adjustment of the rod 101 to furnish the extent of reciprocatory movement of the piston valve required.

The valve 53 referred to, for regulating the supply of steam to the burners may be constructed the same as the oil regulating valve described. and may be operated by means similar to that described for said oil regulating valve.

This steam regulating valve comprises a ylinder casing 119 (Fig. 6) having heads .31 and 153 at opposite ends thereof. said cylinder being secured by bolts 155 to the sup Jorting plate 75.

lvlonnted in said cylinder is a piston valve 157 having diametrically opposed tri un ular ports l5? adapted to communicate uith diametri ally opposed rectangular ports 10*. in said cylinder. The latter ports may communi ate with an annular passage 163. communicating in turn with the pipe 55 for conducting steam toward the burners. The steam may pass from the pipe 51 into the cylinder 149, and thence through the ports 159 and 161, and annular passage 163 to the steam pipe 55.

The valve piston 157 may be connected by a stem 165 with a slide block 167 mounted in a guideway 169 on the supporting plate 75. Pivoted on the slide block is a sleeve 171 receiving a rod 173 having its upper end pivotally connected to a nut 175 on a screw 177 mounted in a bracket 179. said screw being provided with a handle 181. A hand nut 183 on said screw may engage an outer end of the bracket 179 and secure the screw in different positions of adjustment.

The lower end of the rod 173 may be pivotally connected to a nut 185 on a screw 187 mounted in a bracket 189, the upper end of said screw being provided with a handle 191. A hand nut 193 may engage the outer end of the bracket 189 to secure the screw in different positions of adjustment.

The brackets 179 and 189 are secured to the frame 121 referred to, and therefore, on reciprocatory movements of the latter, the rod 173 may slide through the sleeve 171 and impart reciprocatory movements to the piston valve 157, and regulate the supply of steam in a manner similar to the regula tion of the supply of oil described.

The adjustments of the steam control valve 157 may be indicated by an index 159 and frame 158' similar to the construction described for the oil control valve.

As stated, one of the purposes of the invention is to establish a predetermined working pressure of steam, and to control the supply of oil and steam to the burner or burners so as to develop heat in the boilers to develo steam and maintain the same substantialy at the same pressure as the predetermined working pressure.

To accomplish this, in the present instance of the invention, a diaphragm device may be rovided comprising a casing 195 conveniently connected to the lower end of the piston cylinder 135, and containing a diaphragm 197. The lower end of thiscasing may be connected by a pipe 199 with the upper end of a cylinder 201 (Fig. 2) containing an inverted cup 203. Said casing ma be filled with water so as to leave an air cus ion space 205 in the cup.

The casing 195 may be connected by a pipe 207 with the steam supply main 35 re erred to, at a point adjacent an orifice plate 209 (Fig. 1) in said main. Since the ipe 209 is connected to said main on the Einetic side of said orifice plate, the upper side of the diaphragm 197 will be subjected to the pressure of the steam flow, and to any variatio ns in the pressure of the steam flow.

The steam supply pipe 51 referred to, may be connected to the steam supply main 35 at the static steam side of the orifice plate 209. The static steam supply pipe 51 may be connected to the kinetic steam supply pipe 297 by a pipe 210 provided with a valve 211, and the kinetic steam pipe may be connected to the pipe 199 leading from the diaphragm casing 195 to the cushion cylinder 201 by a pipe 212 provided with a valve 213. The kinetic steam supply pipe 207 may be provided with a valve 215 conveniently somewhat above the juncture of the pipe 209 therewith.

When it is desired to establish the predetermined working pressure, the valves 51 and 215 are closed, and the valves 211 and 213 are opened, thereby subjecting the upper and lower sides of the diaphragm 197 and the air cushion 205 to the static pressure of the steam. After this has been accomplished, the valves 211 and 213 are closed, thereby maintaining the established pressure on the air cushion. The valve 215 is then opened, thereby subjecting the upper side of the diaphragm 197 to the kinetic pressure of the steam. When the kinetic pressure varies, the static pressure of the steam will also vary, and therefore, the diaphragm 197 will move in response to variations both in static and kinetic steam pressures.

Suitable means may be provided to trans mit movements from the dia hragm 197 to pilot valve 137 referred to. 1 0 accomplish this, in the present instance, the diaphragm 197 is connected to a yoke lever 217 (Figs. 3. 1 and 6) fulcrumed on p ns 219 on the diaphragm casing 195. An arm 221 projects from said yoke lever, and is connected by a rod 223 to one end of a lever 225 fulcrumed on pins 227 carried by a bracket 229 conveniently mounted on the cylinder 135 referred to. The opposite end of the lever 225 has a bell crank 231 pivotally connected thereto. The short arm 233 of said bell crank may be connected to the stem 137" of the pilot valve, and the long arm 235 may be connected by a link 237 with the upper end of a standard 239 having its lower end pivoted on a pin 241 mounted in a bracket 243 adjacent the lower end of the cylinder 135.

A shoe 245 may be pivotally connected to the upper end of the standard 239, and receive an inclined bar 247 having a pin 249 projecting into a bracket 251 secured to one of the members 123 of the frame 121. An arm 253 projects from said member and carries a swivel pin 255 threaded to receive an adjusting screw 257 having an end connected to said bar 247. The construction is such that the bar 247 is carrietl by and moves with the frame 121, but said bar may be adjusted in different positions of angular adjustment to said frame by means of the screw 257.

When the diaphragm 197 is moved, it will operate through the yoke lever 217. arm 221 and rod 223 to rock the lever 225 on its pivot pins 227. This will bodily move the bell-crank and shift the valve stem 137, thereby moving the pilot valve to admit compressed air to one end of the cylinder 135. This will cause the piston 133 to move in said cylinder, and move the frame 121. The inclined bar 247 carried by said frame will also he moved, and caused to slide in the shoe This will rock the standard 239, and through the link 237 will rock the bell-crank in a direction opposite to its previous rocking movement, there by shifting the pilot valve to cut off the supply of compressed air to the cylinder 235, and thereby interrupt movement, of the piston 133, and the movement of the frame 121.

The movement of the frame 121, as stated, will move the inclined rods 1.01. and 173 and move the valves for regulating the sup ply of oil and steam to the burners.

If the steam pressure in the supply main rises, the diaphragm 197 will be flexed down ward against the pressure afforded by the air cushion 205. This downward movement of the diaphragm will move the oil and steam regulating valves so as to reduce the supply of oil and steam to the burners. This will reduce the amount of heat in the combus' tion chambers of the boilers, and thereby reduce the steam pressure. When the pres sure has been reduced, the air cushion will cause the diaphragm to move upward, thereby through the instrunientalities d'cscribed automatically shifting the oil and steam re ulating valves so as to increase the suppy of oil and steam to the burn ers. This will increase the heat in the combustion chambers of the boilers and increase the pressure of the steam generated. Thus, the apparatuswill automatically tend to feed the proper quantity of oil and steam to the burners to maintain the pressure of the steam generated substantially at the standard of working pressure of the steam on the air cushion,

As stated, one of the purposes of the invention is to provide a regulating apparatus which may control the dampers in the intake and the uptake. To regulate the dampers 27 in the intake, in the present instance, the lower eye 129 of the reciprocatory frame 121 may be connected to one end of a belt 259 (Figs. 1 and 2). and said belt may be passed around and guided by a pulley 261 on a shaft 263 journalled in hearin 265 mounted at the front of the boilers. he oelt extends upward from the ulley 261 over an intermediate pulley 267 (Fig 2), and rearward about a pulley 269 on a shaft 271 journalled in bearings 273 mounted at the front of the boilers. The belt extends thence around a second intermediate pulley 275, and downward with the opposite end of the belt connected to the upper eye 1:27 referred to, of the reciprocatory frame 121. The construction is such that the reciproratory movements of said frame will impart movements to said belt. which in turn ill impart rotary movements to the horizontal shafts 261 and 271.

Suitable means may be provided to 1111 part motion from the lower horizontal shaft 261 to the intake dampers 27. To this end pulleys 277 may be mounted fast on the shaft 263. and may be connected by belts 279 with pulleys :Zbl operatively connected with the intake dampers 27.

Suitable means may be provided to transmit movements from the upper horizontal shaft 271 to the uptake dampers 31. This means, in the present instance, comprises pulleys 2&5 fast on the upper horizontal shaft 271 connected by belts 285 with pulle s 287 operatively i-onnected with the uptalle dampers 31 intermediate runs of said belt being; guided by pulleys 289 and 291.

The construction is such that reciproratory movements of the frame 121 will oper ate through the connections described to inipart rotary" regulating movements to the intake dampers 2? and the uptake dampers 31. It the steam pressure lowers. the dampers will be automatically opened to supply an increased quantity of air to the furnaces, and allow more ready est-ape of the products of combustion therefrom at the same time that the fuel supply of the burners is in creased, This will aotomatically increase the steam pressure. and when the latter rises, it will operate through the regulating apparatus as desrrihed to close the dampers somewhat and thereby reduce the steam pressure. Thus, the apparatus may automatically operate to control combustion conditions so as to maintain the steam at substantially the same pressure as the predetermined working pressure established.

The extent of the reciprocatory movements of the piston valves of the oil and steam regulating valves may be adjusted hyvariation in the angles of the frame carried reciprficatory rods 101 and 173. This adjustment enables a very slight, extent of reciprocatory movements of said valves,or a substantial extent of rcciprooatory move ment of said valves.

Also, the frame carried rods may be bodily adjusted by their adjusting screws without variation in the angles of said rods, thereby permitting the piston valves to be adjusted in their cylinders so as to locate the range of reriprocatory movements of the piston valves as desired For example, the bodily adjustment of the frame carried rods may be such that the triangular ports of the piston valves will slightly overlap the rectangular ports of the cylinder throughout the reciprocatory movements of the piston valves, or the frame carried rods may adjusted so that the valve ports will overlap the cylinder ports a substantial amount throughout the reciprocatory movements of said piston valves. Thus, the adjustment of the piston valves may be such that a quantity of oil and steam will be delivered to the burners which is approximately correct to maintain a temperature in the boilers sulficient to develop steam having the predetermined working pressure desired, and the regulating apparatus will operate to impart such movements to the oil and steam regulating valves as to slightly increase or decrease the supply of oil and steam to the burners so as to tend to maintain the steam developed at said working premure.

In some cases it may be desirable that the air cushion or counterpressure, afforded by the inverted cup in the water containing casing may serve a plurality of regulating a paratus such as disclosed herein for ad ditional boiler units. To accomplish this, the pipe 199 leading from said casing may communicate with a branch pipe 199 having a valve 199", leadin to the regulating a paratus for such additional boiler units.

us the single counterpressure device may serve to maintain the same counterpressure in the regulating apparatus for all of the units and insure uniform operation thereof.

It will be understood: that the invention is not limited to the specific embodiment shown and that various deviations may be made therefrom without departin from the spirit and scope of the appended c aims.

What is claimed is:

1. In a regulating apparatus, the combination of a burner, means to supply oil and steam thereto including valves, a support for said valves, a sliding frame upon said support, pressure controlled means for imartin sliding movement to said frame, bars a justably mounted upon said frame, one for connection with the oil valve and the other for connection with the ste'am valve, and means for adjusting said b rs to different inclinations upon the ham to vary the movement imparted to the 1&5 upon sliding movement of the frame.

2. In a regulating apparatus, the cornbi-' nation of a burner, means to supply oil and steam thereto including valves, a su/pport for said valves, a sliding frame upo said support, pressure controlled means [or impartsliding movement to said rame, bars a ustably mounted u n the flame, one for each valve, means slidingly engaging one "bar and operatively connected to the oil valve, means slidably engaging the other bar and operatively connected to the steam valve, and means for adjusting the bars to different inclinations upon the frame to vary the movement imparted to the valves upon sliding movement of the frame.

3. In a regulating apparatus, the combination of a burner, means for supplying oil and steam thereto including valves, a support for said valves, a frame, valve actuating bars adjustably mounted upon the frame, means for adjusting the bars to different inclinations upon the frame, a connection between one bar and the oil valve to shift the position of the latter upon sliding movement of the bar, a connection between the other bar and the steam valve to shift the position of the valve upon sliding movement of the bar, and pressure controlled means for moving the bars in the general direction of their length to actuate the valves.

4. In a regulating apparatus, the combination of a burner, means for supplying oil and steam thereto including valves, 0, support for said valves, a frame, valve actuating bars adjustably mounted upon the frame, means for adjusting the bars bodily and to different inclinations upon the frame a connection between one bar and the oil valve to shift the latter upon movement of the former, a connection between the other bar and the steam valve to shift the valve upon movement of the bar, and pressure controlled means for moving the bars in the general direction of their length to actuate the valves.

5. In a re ulating apparatus for a steam generator, t e combination of a burner, means to supply oil and steam thereto including valves, asliding frame, a liquid motor for im arting iding movement to the frame, a pi 01; valve actuated b steam pressure to control the motor, va ve actuating bars mounted upon the frame and adjustable thereupon to different inclinations, a connection between one bar and the oil valve to shift the latter upon movement of the former, and a connection between the other bar and the steam valve to shift the valve, upon movement of the bar, thereby to regulate the valves automatically in accordance with variations in steam pressure.

6. In a regulating apparatus, the combination of a burner, means to supply oil and steam thereto including valves, a support for said valves, a motor mounted on said support comprising a cylinder, a piston in said cylinder, and a frame connected to said piston and movable therewith, members carried by said frame, one for connection with the oil valve and the other for connection with the steam valve, and means for adjusting said members with respect to said frame to vary the obliquit thereof or the bodily position thereof wit respect to said frame Ill to regulate said valves on reciprocation of said iston in said cylinder.

7. he combination with a plurality of burners, of means to feed oil and atomizing fluid thereto, and a regulating device for controlling, the supply of oil and steam to all said burners comprising an oil control valve, an atomizing fluid control valve, a fluid mo tor for operating said valves including a cylinder and a piston therein, a pilot valve for rontl'olling admission of motive fluid to said cylinder, a diaphragm cbnneeted to said pilot valve, and means to subject said diaphragm to steam pressure and a counter pressure that said diaphragm may move in response to variations in the pressure to operate the pilot valve and cause the motor to operate said valves and automatically regulate the supply of on lulu. atomizing fluid to the burners.

8. In a regulating apparatus, the combination of a burner, means to supply oil and steam thereto including valves, a sliding frame, an operating connection between the frame and oil valve, an operating connection between the frame and steam valve, :1 pressure controlled motor for imparting movement to the frame to actuate the valves, and means for indicating the adjustment of the valves comprising imitation valves aetuated by the valve adjusting means to reproduce the valve adjustment.

In testimony whereof, I have signed my name to this specification.

FRANCIS H. BROWN. 

